Otto spaethe



(No Model.) 2 Sheets-Sheet 1;

O. SPAETHB. y

MECHANICAL MUsmAL INSTRUMENT.

(No Mael.) 2 'sheets-sheet 2.

0. SPAETHE.

MECHANICAL MUSICAL INSTRUMENT.

No.. 298,288. Patented Apr. I, 1884.'

'WITNESSEM d. @yy/MZ INIENTCE- L/848%@ ATTORNEY NrrED Srarns orro srnnrrrn, or enna, GERMANY.

SPECIFICATION forming part of Letters Patent No. 296,238, dated April 1, 1884.

Application filed June 9, 1883.

To all whom it may concern:

Be it known that I, OTTO Srnn'rrrn, of Gera, in the Empire of Germany, have invented certain new and useful Improvements in Mechanical Musical Instruments, of which the following is a specification. v

This invention relates to that class of mechanical musical instruments in which cylinders of sheet metal having raised portions integral with the sheet are employed.

In the accompanying drawings, Figure l represents a sectional end elevation of a inechanical musical instrument with my improvement. l Fig. 2 is a vertical longitudinal section of the same, a part being broken away. Figs. 3 and 4 are details of the cylinder, and Fig. 5 a detail section of the bearings of the same.

Similar letters of reference indicate corresponding parts.

A in the drawings represents the shaft of m-y improved cylinder, which shaft is pro-- vided with disk-shaped heads B B, which are connected to each other by longitudinal stiffening-strips a.

To the heads B Bv is applied a cylindrical sheet,l G, which is provided upon its surface with raised portions b, of greater or less size,

that are stamped up integral with the body of the sheet-cylinder, according to the tunes thatare to be produced thereby. The location of the raised portions and the size of the same corresponds to the location and size of the projections on the cylinders, or to the perforations of the sheets heretofore in use in mechanical musical instruments. The raised portions Z) b act upon the key-levers of the reeds in the usual manner, as heretofore. The sheet metal from which the cylinder C is made has to be of such thickness that when it is applied, to the heads B B it rests on the circumferences of the same and on the stilfening-stripsa, and has sufficient stiffness to work the key-levers of the reeds; The cylinder C is secured to the heads B B by screwstuds S, the shanks of which pass through slots at the ends of the sheet-cylinder, as shown clearly in Figs. 4 and 5.

'Io the shaft 'A is applied, next adjoining the disk B', a gear-wheel, D, which is engagedv by a worm-wheel, F, that is operated by a hand-crank, E. Ihe shaft G of the (No model.)

of the shaft'G, and consequently the turning of the sheet-cylinder in the opposite direction.

To insert metallic sheet-cylinders of different diameter, the shaft A of the cylinder is supported in standards II, which are provided with vertical slots h, the width of which corresponds to the diameter of the shaft A.

In recesses of the standards II move transverse slides I, which are provided with vertical slots t', and also with several horizontal recesses, 7c, which are located vertically above each other, as shown in Fig. 3. Vhen the shaft A is to be placed in position, the slides I are pulled outward by their handlesl until the slots i are vertically below the slots h of the standards H. The shaft is now inserted and the slides I pushed back, so that the ends of the shaft are supported in a higher or lower position by the horizontal slots k, according to the diameter ofthe sheetcylinder employed. Ihe fixed support of the shaft A is thereby secured, as thevertical slots It prevent the horizontal shifting, and the horizontal recesses 7c the vertical shifting, of the cylinder. The horizontal slots k admit the use of cylinders C and heads B B', of different diameters, so that music-pieces of more or less length, which require cylinders of larger or smaller diameter, can be supported thereon, as indicated in dotted lines in Fig. 3. In this manner cylinders of sheet metal are furnished which are less expensive and of less weight than the cylinders heretofore in use, while they are also more durable, owing to the material of which they are made, than the paper sheets heretofore employed.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- I. -In a mechanical musical instrument, adetachable sheet-metal cylinder having raised4 portions of greater or smaller size, made integral with the body of the sheet, in combination with wooden heads, to which the cylinder is detachably applied, stiffening-strips c, shaft ofthe cylinder-heads, a gear-wheel, a crankrod, aworm-wheel, and a ratchet-wheel and pawl, substantially as described.

IOO

2. In mechanical inusieal instruments, the combination of a shaft, A, cylinder C, attached to heads B B of said shaft, snpportingstandards I-I 1I, having vertical recesses h, transverse 5 slides I, having vertical slots i, with horizontal recesses 7c, so that cylinders of diii'erent diameters ean be supported Without shift-ing` in any direction, substantially as speeied.

In testimony that I claim the foregoing as my invention I have signed my name in pres1 Io ence ol" two subscribing witnesses.

OTTO SPAITHE.

\Vitnesses:

RUDOLF Srniminniwf, WILn. FRIEDBWALD. 

